CN110476106B - Stereoscopic image imaging device - Google Patents
Stereoscopic image imaging device Download PDFInfo
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- CN110476106B CN110476106B CN201880022047.4A CN201880022047A CN110476106B CN 110476106 B CN110476106 B CN 110476106B CN 201880022047 A CN201880022047 A CN 201880022047A CN 110476106 B CN110476106 B CN 110476106B
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- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
Abstract
The invention aims to provide a method for manufacturing a three-dimensional image forming device which is relatively easy to manufacture and can obtain a clear three-dimensional image. The manufacturing method of the present invention comprises: a 1 st step of manufacturing a molding base material (22) of the 1 st and 2 nd light control panels (13, 14) by injection molding or the like using a 1 st transparent resin, the molding base material (22) being formed by arranging grooves (19) having inclined surfaces (17) and vertical surfaces (18) and having a triangular cross section and ridges (20) formed by adjacent grooves (19) and having a triangular cross section in parallel on the front surface side of a transparent plate material (16); a 2 nd step of selectively forming a mirror surface only on a vertical surface (18) of a groove (19) of each molding base material (22) to manufacture an intermediate base material (28) of the 1 st and 2 nd light control panels (13, 14); and a 3 rd step of sandwiching a 2 nd transparent resin sheet 32 having a melting point lower than that of the 1 st transparent resin in a state where the ridges 20 of the paired intermediate base materials 28 are opposed to each other, heating and pressing the sheet in a vacuum state, and filling the grooves 19 of the opposed intermediate base materials 28 with the 2 nd transparent resin.
Description
Technical Field
The present invention relates to a method for manufacturing a three-dimensional image forming apparatus in which 1 st and 2 nd light control panels (parallel light reflection panels) each having a strip-shaped light reflection surface (mirror surface) arranged in parallel are stacked (or integrated) with or without a gap in a state where the light reflection surfaces thereof are orthogonal to each other in a plan view.
Background
As a device for forming a three-dimensional image using light (scattered light) emitted from a surface of an object, for example, a three-dimensional image forming device (optical image forming device) described in patent document 1 is known.
The imaging device is obtained as follows: the imaging device is provided with 1 st and 2 nd light control panels, wherein the 1 st and 2 nd light control panels are obtained by arranging a plurality of strip-shaped light reflection surfaces composed of metal reflection surfaces at a fixed pitch in the thickness direction of two transparent flat plates perpendicularly, and one surface sides of the 1 st and 2 nd light control panels are opposed and closely attached so that the light reflection surfaces of the 1 st and 2 nd light control panels are orthogonal in a plan view, thereby obtaining the imaging device.
Documents of the prior art
Patent document
Patent document 1: international publication No. 2009/131128
Patent document 2: international publication No. 2015/033645
Disclosure of Invention
Problems to be solved by the invention
In the production of the 1 st and 2 nd light control panels, a plurality of plate-shaped transparent synthetic resin plates or glass plates (hereinafter, also referred to as "transparent plates") having a certain thickness and having a metal reflection surface formed on one surface side thereof are stacked so that the metal reflection surfaces are arranged on one side to produce a laminate, and the laminate is cut so as to form cut surfaces perpendicular to the metal reflection surfaces.
Therefore, a large-sized vapor deposition furnace is required for forming the metal reflecting surface on the transparent plate, and an operation of placing 1 or a small number of transparent plates in the vapor deposition furnace, degassing the transparent plates to a high vacuum, performing vapor deposition treatment, and taking out the transparent plates after vapor deposition under atmospheric pressure is required to be repeated over a hundred times, which is a very time-consuming operation. Further, since it is necessary to laminate transparent plates after metal deposition to form a laminate, perform a cutting operation with a very thin predetermined thickness, cut out the 1 st and 2 nd light control panels from the laminate, and then perform a polishing operation of cut surfaces (both surfaces) of the 1 st and 2 nd light control panels, the workability and the manufacturing efficiency are poor.
Further, as shown in fig. 1 to 3 of patent document 1, there is described a case where a groove having a vertical plane and a right triangle in cross section is formed on one surface of a transparent synthetic resin plate, and a metal is deposited on the vertical plane to form a light reflecting surface, but there is a problem that a clear three-dimensional image cannot be formed because air exists in the groove and the refractive index is different from that of the transparent synthetic resin plate.
As disclosed in patent document 2, the following method is proposed: two light control panels are prepared, each of which has a corrugated plate material in which a groove having a rectangular cross section and formed by parallel banks is formed on one surface, and light reflection portions are formed on parallel side surfaces of the groove that face each other, so that the two light control panels face each other in a state where the light reflection portions are orthogonal or intersect each other.
However, when the height of the bank of the uneven plate material is increased (that is, when the depth of the groove is increased) at the time of injection molding, there is a problem that demolding becomes very difficult. Further, it is difficult to uniformly mirror only the side surfaces of the parallel grooves, and there is a problem that the product has many variations.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a method of manufacturing a stereoscopic image forming apparatus which can easily manufacture a clear stereoscopic image.
Means for solving the problems
In the method of manufacturing a stereoscopic imaging apparatus according to claim 1 corresponding to the object, the stereoscopic imaging apparatus is formed as follows: the method for manufacturing a three-dimensional image forming apparatus includes the steps of forming a three-dimensional image forming apparatus by making strip-shaped light reflecting surfaces of 1 st and 2 nd light control panels, each of which has a plurality of strip-shaped light reflecting surfaces arranged in parallel with each other with a gap in an erected state (in the erected state, the erected state is perpendicular to the surfaces of the 1 st and 2 nd light control panels), orthogonal to each other in a plan view, and then overlapping the 1 st and 2 nd light control panels with or without a gap therebetween:
a 1 st step of manufacturing a 1 st and a 2 nd molded base material of the light control panel by using a 1 st transparent resin by any one of press molding, injection molding and roll forming, the 1 st and the 2 nd molded base material of the light control panel being formed by arranging a plurality of grooves having an inclined surface and a vertical surface and a triangular cross section and ridges formed by the adjacent grooves and having a triangular cross section on a front surface side of a transparent plate material in parallel;
a 2 nd step of selectively forming a mirror surface only on a vertical surface of the groove of each of the molded base materials to manufacture an intermediate base material of the 1 st and 2 nd light control panels; and
and a 3 rd step of sandwiching a 2 nd transparent resin sheet having a melting point lower than that of the 1 st transparent resin in a state where the ridges of the pair of intermediate base materials are opposed to each other, and heating and pressing the sheet in a vacuum state to fill the grooves of the opposed intermediate base materials with the 2 nd transparent resin.
In the method of manufacturing a stereoscopic image forming apparatus according to claim 1, when the depth of the groove is d, the thickness t1 of the 2 nd transparent resin sheet is preferably t1 > d (more specifically, 2d > t1 > d).
Further, in the method for manufacturing a stereoscopic imaging apparatus according to claim 2 corresponding to the object, the stereoscopic imaging apparatus is formed as follows: the stereoscopic image forming apparatus is formed by making the strip-shaped light reflecting surfaces of the 1 st and 2 nd light control panels respectively provided with a plurality of strip-shaped light reflecting surfaces which are arranged in parallel with each other with gaps in the standing state orthogonal in a plan view, and then overlapping the 1 st and 2 nd light control panels, and includes the following steps:
a 1 st step of manufacturing a 1 st and a 2 nd molded base material of the light control panel by using a 1 st transparent resin by any one of press molding, injection molding and roll forming, the 1 st and the 2 nd molded base material of the light control panel being formed by arranging a plurality of grooves having an inclined surface and a vertical surface and a triangular cross section and ridges formed by the adjacent grooves and having a triangular cross section on a front surface side of a transparent plate material in parallel;
a 2 nd step of forming an intermediate base material of the 1 st and 2 nd light control panels by selectively forming a mirror surface only on a vertical surface of the groove of each of the molded base materials; and
a 3 rd step of placing a 2 nd transparent resin sheet having a melting point lower than that of the 1 st transparent resin on the surface of each of the intermediate base materials on which the grooves and the ridges are formed, heating and pressing the sheet in a vacuum state to fill the grooves with the 2 nd transparent resin,
the 1 st and 2 nd light control panels are formed separately.
In the method of manufacturing a stereoscopic image forming apparatus according to claim 2, when the depth of the groove is d, the thickness t1 of the 2 nd transparent resin sheet is preferably 2 × t1 > d (more specifically, 2d > 2 × t1 > d).
In the method for manufacturing a stereoscopic imaging device according to claim 1 or 2, the mirror surface on the vertical surface in the step 2 is preferably formed by sputtering, metal vapor deposition, metal particle spray coating, or ion beam irradiation toward the vertical surface so as to be parallel to the inclined surface or so as to protect the inclined surface, or by irradiating metal particles by another method (the method can be applied to the method for manufacturing a stereoscopic imaging device according to claim 3).
In the method of manufacturing a stereoscopic imaging device according to claim 1 or 2, the inclined surface is preferably a flat surface or a concave surface recessed inward or a polygonal surface (composed of a part of a polygon).
In the method of manufacturing a stereoscopic image forming apparatus according to claim 1 or 2, it is preferable that the minute flat portions are formed at the bottom corner portions of the grooves having a triangular cross section and at the top corner portions of the ridges having a triangular cross section.
In the method for manufacturing a stereoscopic imaging device according to the 1 st and 2 nd aspects of the invention, the refractive index η 2 of the 2 nd transparent resin is preferably in a range of 0.8 to 1.2 times (more preferably 0.9 to 1.1 times, and further preferably 0.96 to 1.04 times) the refractive index η 1 of the 1 st transparent resin. In the present invention, since the refractive indices of the 1 st and 2 nd transparent resins are made the same or similar, the prism phenomenon is less likely to occur.
The method for manufacturing a stereoscopic imaging device according to claim 3 includes:
a first step of manufacturing a molding base material made of a 1 st transparent resin by press molding, injection molding, or roll forming, in which a 1 st groove and a 2 nd groove each having a vertical surface and an inclined surface and a triangular cross section are formed on both sides of a transparent plate material, a 1 st ridge having a triangular cross section formed by the adjacent 1 st groove and a 2 nd ridge having a triangular cross section formed by the adjacent 2 nd groove are formed on both sides of the transparent plate material, and a plurality of the 1 st groove and the 2 nd groove formed on both sides of the transparent plate material are arranged orthogonally in a plan view;
a 2 nd step of forming an intermediate base material by selectively forming a mirror surface only on the vertical surfaces of the 1 st groove and the 2 nd groove located on both sides of the molding base material; and
and a 3 rd step of placing a 2 nd transparent resin sheet having a melting point lower than that of the 1 st transparent resin on both surfaces of the intermediate base material on which the 1 st and 2 nd grooves and the 1 st and 2 nd ridges are formed, heating and pressing the sheet in a vacuum state, and filling the 1 st and 2 nd grooves with the 2 nd transparent resin.
In the above invention, "the mirror surface is selectively formed only on the vertical surface" means that the mirror surface is not formed on the minute flat surface portion formed on the top corner portion of the ridge, not only on the inclined surface. In addition, the minute flat portions at the apex portions of the ridges may be formed with a release film and then mirror-finished, or the mirror-finished surface may be removed (by mechanical polishing, chemical polishing, or the like) after the mirror-finished surface is formed. Further, only the minute flat portions may be colored (for example, black). In this case, the coloring is usually performed after the mirror surface is formed by metal vapor deposition, but the coloring may be performed before or after the metal vapor deposition.
Effects of the invention
The method for manufacturing a stereoscopic image forming apparatus according to any one of claims 1 to 3 uses a molding base material manufactured by any one of press molding, injection molding and roll molding, and a plurality (a large number) of grooves having inclined surfaces and vertical surfaces are formed in parallel on the molding base material. Since the groove is widened toward the open side, the pressing and the releasing are facilitated, and a stereoscopic image forming apparatus having a high aspect ratio defined by (depth of groove)/(width of groove) can be manufactured at a relatively low cost.
Here, in order to selectively mirror the vertical surface, sputtering, metal vapor deposition, metal microparticle spraying, or ion beam irradiation, which is a known method, is performed from the direction along the inclined surface toward the vertical surface, and the metal plating layer is formed only on the vertical surface. By forming the inclined surface as a flat surface and further forming a concave surface recessed inward, it is possible to prevent the formation of a mirror surface on the inclined surface of the groove as much as possible.
In particular, since the surface of the intermediate base material on which the grooves (1 st and 2 nd grooves) are formed is covered with a sheet made of a 2 nd transparent resin having a melting point lower than that of the 1 st transparent resin, and the groove is filled with the 2 nd transparent resin by heating and pressing the sheet in a vacuum state, the groove can be filled with the 1 st transparent resin while maintaining its shape.
Further, by making the refractive indices of the 1 st transparent resin and the 2 nd transparent resin the same or close to each other, a three-dimensional image with less distortion can be reproduced.
Drawings
Fig. 1 (a) and (B) are a front sectional view and a side sectional view, respectively, of a stereoscopic imaging apparatus manufactured by a method of manufacturing a stereoscopic imaging apparatus according to embodiment 1 of the present invention.
Fig. 2 (a) and (B) are a front sectional view and a side sectional view, respectively, illustrating the manufacturing method.
Fig. 3 (a) and (B) are explanatory views of the manufacturing method, and (C) and (D) are partially enlarged side sectional views of the groove and the ridge of the intermediate base material according to the modification example, respectively.
Fig. 4 is an explanatory view of a method of manufacturing a stereoscopic imaging device according to embodiment 2 of the invention.
Fig. 5 (a) and (B) are explanatory views of the 1 st and 2 nd light control panels formed by the above-described manufacturing method, respectively.
Fig. 6 (a) and (B) are explanatory views of a method of manufacturing a stereoscopic imaging device according to embodiment 3 of the present invention.
Detailed Description
Next, a stereoscopic image forming apparatus and a method of manufacturing the same according to an embodiment of the present invention will be described with reference to the drawings.
As shown in fig. 1 (a) and (B), the stereoscopic imaging device 10 manufactured by the method for manufacturing a stereoscopic imaging device according to embodiment 1 of the present invention is formed as follows: the light control panel is formed by overlapping the 1 st and 2 nd light control panels 13 and 14 in a state where the strip-shaped light reflection surfaces 11 and 12 of the 1 st and 2 nd light control panels 13 and 14 are orthogonal in a plan view, and the 1 st and 2 nd light control panels 13 and 14 include a plurality of strip-shaped light reflection surfaces 11 and 12 arranged in parallel with each other with a gap in a standing state.
In manufacturing the stereoscopic image forming apparatus 10, as shown in fig. 3 a, the molding base material 22 of the 1 st and 2 nd light control panels 13 and 14 is manufactured by injection molding (or press molding or roll forming) using the 1 st transparent resin as a raw material, and the molding base material 22 of the 1 st and 2 nd light control panels 13 and 14 is formed by arranging grooves 19 having inclined surfaces 17 and vertical surfaces 18 and ridges 20 having a triangular cross section and formed by adjacent grooves 19 in parallel on the front surface side of the transparent plate material 16 at a predetermined pitch w. As the 1 st transparent resin, a thermoplastic resin having a high melting point (for example, pulsatilla (ZEONEX: registered trademark, glass transition temperature: 120 to 160 ℃, refractive index: 1.535, cycloolefin polymer) is preferably used, and as the transparent resin, a thermoplastic resin such as polymethyl methacrylate (acrylic resin), amorphous fluororesin, PMMA, optical polycarbonate, fluorene polyester, polyether sulfone, etc. is used.
The molded base material 22 is preferably annealed after molding to remove residual stress and the like. Further, the minute flat portions 23, 24 are provided at the bottom (bottom corner portion) 21 of the groove 19 and the top (top corner portion) 21a of the ridge 20. For example, the width of the minute flat portions 23 and 24 may be about 0.01 to 0.1 times the pitch w of the ridges 20.
The depth d of the groove 19 is preferably set to (0.8 to 5) w. Thus, a light reflecting surface having an aspect ratio (height d of mirror surface/pitch w of mirror surface) of 0.8 to 5 is obtained (step 1).
Next, as shown in fig. 3 (B), a process is performed in which a mirror surface is selectively formed only on the vertical surface 18 of the groove 19 of the molding base material 22, and a transparent state is maintained without forming a mirror surface on the inclined surface 17. As shown in fig. 3 (B), the selective formation of the mirror surface on the vertical surface 18 is performed as follows: in vacuum or under low pressure, sputtering, metal vapor deposition, metal particle spray coating, ion beam irradiation, or metal particle irradiation by another method is performed toward the vertical surface 18 so as to be parallel to the inclined surface 17 from the direction along the inclined surface 17 or so as to protect the inclined surface 17. In this case, the irradiation direction 26 (angle θ 2) of the metal particles is preferably deviated to a very small extent horizontally from the angle θ 1 of the inclined surface 17 (that is, θ 1 > θ 2). This can reduce or eliminate adhesion of metal particles to the inclined surface 17. In addition, since metal particles are often attached to the minute flat portions 24 to form mirror surfaces (metal reflection surfaces), the metal particles attached to the minute flat portions 24 are removed by mechanical polishing or chemical polishing. Although the metal particles are not easily attached to the minute plane portions 23, they can be used even if they are attached. Further, it is preferable that after the mirror surface is removed from the minute flat portions 24, a coloring (e.g., black) process is performed to prevent reflection from occurring at the portions. The coloring is preferably performed on the mirror surface formed on the minute flat surface portion 24 or on the upper and lower sides of the mirror surface.
Through the above processing, only the vertical surface 18 is mirrored to form the vertical light reflecting surface 27 (the belt-shaped light reflecting surfaces 11 and 12 to be the 1 st and 2 nd light controlling panels 13 and 14), and the intermediate base material 28 of the 1 st and 2 nd light controlling panels 13 and 14 is manufactured (the above is the 2 nd step).
In this embodiment, the inclined surface 17 is a flat surface and is a very small range, but metal particles may adhere to the inclined surface 17 even in the mirror-surface formation of the vertical surface 18, and therefore, as shown in fig. 3(C) and (D), the inclined surfaces 29 and 30 may be formed to have a concave surface using a part of a polygon and an arc-shaped concave surface (the same applies to the following embodiments). The inclined surface of the present invention also includes these concavities. The molding and demolding of these concave surfaces recessed inward are easy. In the drawings, the inclined surface including the concave surface may be described as a flat surface.
Thus, as shown in fig. 2 (a) and (B), since the intermediate base materials 28 of the 1 st and 2 nd light control panels 13 and 14 are formed, the sheet 32 of the 2 nd transparent resin having a lower melting point than the 1 st transparent resin is sandwiched in a state where the ridges 20 of the pair of intermediate base materials 28 are opposed to each other, and is heated and pressed in a vacuum state to melt only the 2 nd transparent resin, and the grooves 19 of the opposed intermediate base materials 28 are filled with the 2 nd transparent resin (the above is the 3 rd step).
In addition, here, when the depth of the groove 19 is d, the thickness t1 of the 2 nd transparent resin sheet 32 is t1 > d (more specifically, 2d > t1 > d). By making the sheet 32 thicker than a predetermined value, the 2 nd transparent resin can be completely filled in the groove 19. In addition, since a space is formed when the resin to be filled in the groove 19 is insufficient, it is preferable that the 2 nd transparent resin is overflowed from the groove 19.
Through the above processing, as shown in fig. 1 (a) and (B), the stereoscopic imaging device 10 in which the convex stripes 20 of the 1 st and 2 nd light control panels 13 and 14 face each other is completed. The base portions (i.e., the molding base material 22) of the 1 st and 2 nd light control panels 13 and 14 are made of the 1 st transparent resin, and the exposed surfaces 33 and 34 thereof are completely flat.
The 2 nd transparent resin is, for example, Rukusan (Zeonor: registered trademark, glass transition temperature: 100 to 102 ℃), refractive index: 153, cycloolefin polymer), but if the other transparent resin has a lower melting point than the 1 st transparent resin and a higher transparency and further has a refractive index close to that of the 1 st transparent resin, the other transparent resin may be used instead of the 2 nd transparent resin. As the refractive index of the 1 st and 2 nd transparent resins, it is preferable to use transparent resins having the same refractive index as much as possible (for example, 3 digits of the number indicating the refractive index are the same).
As another example, a transparent ultraviolet-curable resin in a liquid state or a two-part curable resin in a liquid state (both in a liquid state) may be used as the 2 nd transparent resin, and then, after coating, the resin may be cured by irradiation with ultraviolet rays or may be cured with time.
The operation of the three-dimensional image forming apparatus 10 will be described with reference to fig. 1 (a) and (B), where light L1 enters the 2 nd light control panel 14 at P1 from an object (not shown), is reflected at P2 of the strip-shaped light reflection surface 12 (formed by the vertical light reflection surface 27) of the 2 nd light control panel 14, enters the 1 st light control panel 13, is reflected at P3 of the strip-shaped light reflection surface 11 (formed by the vertical light reflection surface 27) of the 1 st light control panel 13, and is emitted into the air from the 1 st light control panel 13 at the position of P4 to form an image. In this case, the refractive index of the 1 st and 2 nd transparent resins is substantially the same, and therefore, no phenomenon such as total reflection occurs, although the transparent resin Q1 in fig. 1 (a) enters the transparent resin Q2 from the transparent resin 1 to the transparent resin 2, and the transparent resin Q2 enters the transparent resin 1 from the transparent resin 2. In addition, in fig. 1 (B), S1 and S2 both pass through different substances, but since the refractive indices are similar, total reflection and the like do not occur.
In addition, although refraction occurs at the positions of P1 and P4, the refraction of P1 and P4 cancel each other out. Strip-shaped light reflecting surfaces 11 and 12 are formed on both front and back surfaces (right and left in fig. 1) of the metal plating layer formed by the mirror surface treatment.
Next, a method for manufacturing a stereoscopic imaging device according to embodiment 2 of the present invention will be described with reference to fig. 4.
In the method of manufacturing the stereoscopic image forming apparatus according to embodiment 1, the intermediate base material 28 of the 1 st light control panel 13 is manufactured through the 1 st step and the 2 nd step shown in fig. 3 (a) and (B). The intermediate base material 28 is overlapped with a sheet 36 made of the 2 nd transparent resin, and is disposed between flat presses 37 having a heating mechanism. In this case, the convex strips 20 of the intermediate base material 28 are brought into contact with the pieces 36. It is necessary to fill the groove 19a completely with the sheet 36 having melted the thickness (t 1).
Next, heating and pressing are performed in a vacuum state to a temperature at which the 2 nd transparent resin melts but the 1 st transparent resin does not melt, and the groove 19a is completely filled with the 2 nd transparent resin. Then, the 1 st light control panel 13 is obtained by cooling, and therefore, the 2 nd light control panel 14 is manufactured by the same method (see (a) and (B) of fig. 5, which is the 3 rd step). Then, the perpendicular light reflecting surface 27 forming the strip-shaped light reflecting surface 12 of the 2 nd light control panel 14 and the perpendicular light reflecting surface 27 forming the strip-shaped light reflecting surface 11 of the 1 st light control panel 13 are made to be orthogonal (in the range of 88 to 92 degrees) in a plan view, and the 1 st and 2 nd light control panels 13 and 14 are overlapped and sealed (for example, in a vacuum state) with a transparent resin or the like and joined.
The orientations of the 1 st and 2 nd light control panels 13 and 14 may be as follows: a case where the front surfaces on which the convex strips 20 are formed are brought into contact and overlapped; the case where the front and back sides of the 1 st and 2 nd light control panels 13 and 14 are joined; and the 1 st and 2 nd light control panels 13 and 14 are joined to each other on the back side.
Although the 1 st and 2 nd light control panels 13 and 14 are manufactured separately in the method shown in fig. 4, the intermediate base material 28 of the 1 st and 2 nd light control panels 13 and 14 may be placed on a flat press 37 in a state where it is overlapped with the 2 nd sheet 36 of transparent resin, and heated and pressed in a vacuum state.
As shown in fig. 6 (a) and (B), in the method for manufacturing a stereoscopic image forming apparatus according to embodiment 3 of the present invention, a molding base material 50 is manufactured by press molding, injection molding, or roll forming, and in the molding base material 50, a plurality of 1 st and 2 nd grooves 45 and 46 each having a triangular cross section and having a vertical surface 41 and a vertical surface 42 and an inclined surface 43 and 44 and 1 st and 2 nd ridges 47 and 48 each having a triangular cross section and formed by adjacent 1 st and 2 nd grooves 45 and 46 are formed on both sides of a transparent plate material 40 made of a 1 st transparent resin, and the 1 st and 2 nd grooves 45 and 46 formed on both sides of the transparent plate material 40 are arranged orthogonally (intersecting) in a plan view (the above is the 1 st step). In this embodiment, the inclined surfaces 43 and 44 are formed as concave surfaces having circular arc-shaped recesses on the inner sides, but may be concave surfaces having a part of a polygon in a plane and a cross section.
Next, mirror processing is performed only on the vertical surfaces 41 and 42 by the same method as the steps described in the method for manufacturing the stereoscopic imaging device according to embodiment 1. Thus, the perpendicular light reflecting surfaces 51 and 52 functioning as the strip light reflecting surfaces of the 1 st and 2 nd light control panels are formed, and the intermediate base material 53 is formed (the above is the 2 nd step). Sheets 54 and 55 made of the 2 nd transparent resin are arranged above and below the intermediate base material 53, and are sandwiched between flat presses 56, and the periphery is vacuumed and pressed while being heated (specifically, put into a vacuum heating furnace). Thereby, the 1 st transparent resin is not melted, but the 2 nd transparent resin is melted and liquefied to fill the 1 st and 2 nd grooves 45 and 46 (the above is the 3 rd step). This completes the three-dimensional image forming apparatus in which the 1 st and 2 nd light control panels are integrated with the top and bottom surfaces being completely flat surfaces. The materials of the 1 st transparent resin and the 2 nd transparent resin are the same as those in the method for manufacturing the stereoscopic image forming apparatus according to embodiment 1.
In the method of manufacturing the stereoscopic image forming apparatus according to the embodiments 2 and 3, when the depth of the grooves 19a, 45, 46 is d, the thickness t1 of the 2 nd transparent resin sheet 36, 54, 55 is preferably 2 × t1 > d (more specifically, 2d > 2 × t1 > d). Thus, the grooves 19a, 45, and 46 are filled with the heated and liquefied 2 nd transparent resin.
In the methods of manufacturing the stereoscopic imaging devices according to embodiments 1 to 3, the refractive index η 2 of the 2 nd transparent resin is preferably in the range of 0.8 to 1.2 times (more preferably 0.9 to 1.1 times) the refractive index η 1 of the 1 st transparent resin, but the present invention is not limited to this refractive index.
The present invention is not limited to the above embodiments, and is also applicable to a case where a stereoscopic imaging device is manufactured by combining the manufacturing methods of the stereoscopic imaging devices of the respective embodiments. In the above embodiment, the vertical light reflecting surfaces (mirror surfaces) as the strip-shaped light reflecting surfaces are formed on both sides of the metal plating layer formed by performing mirror surface processing on the vertical surfaces of the grooves.
In the above invention, the planarization treatment of the surface of the 2 nd transparent resin includes a case of being formed by cutting or grinding, in addition to a case of being pressed with a press or the like and a case of being molded by a mold.
Industrial applicability
The method for manufacturing a stereoscopic imaging device according to the present invention can easily and inexpensively manufacture a stereoscopic imaging device having a high aspect ratio. Accordingly, the stereoscopic imaging apparatus can be effectively used in devices requiring images (for example, medical devices, home appliances, automobiles, airplanes, ships, and the like).
Description of the reference symbols
10: a stereoscopic image imaging device; 11. 12: a strip-shaped light reflecting surface; 13: a 1 st light control panel; 14: a 2 nd light control panel; 16: a transparent plate; 17: an inclined surface; 18: a vertical plane; 19. 19 a: a groove; 20: a convex strip; 21: a bottom; 21 a: a top portion; 22: forming a base material; 23. 24: a minute plane portion; 26: the direction of irradiation; 27: a vertical light reflecting surface (belt-shaped light reflecting surface); 28: an intermediate base material; 29. 30: an inclined surface; 32: slicing; 33. 34: an exposed surface; 36: slicing; 37: a plane press; 40: a transparent plate; 41. 42: a vertical plane; 43. 44: an inclined surface; 45. 46: a groove; 47. 48: a convex strip; 50: forming a base material; 51. 52: a vertical light reflecting surface; 53: an intermediate base material; 54. 55: slicing; 56: a plane press.
Claims (1)
1. A stereoscopic image imaging device formed in such a manner that: the stereoscopic image forming apparatus is formed by superposing a 1 st light control panel and a 2 nd light control panel, each of which has a plurality of belt-like light reflecting surfaces arranged in parallel with each other with a gap in an upright state, such that the belt-like light reflecting surfaces are orthogonal to each other in a plan view,
the 1 st light control panel and the 2 nd light control panel each have a molding base material formed of a 1 st transparent resin and a mirror surface as the belt-like light reflecting surface selectively formed on a vertical surface of each groove of the molding base material, and a plurality of grooves having an inclined surface and a vertical surface and a triangular cross section and ridges formed by the adjacent grooves and having a triangular cross section are arranged in parallel on a front surface side of the transparent plate material in the molding base material, and the mirror surface is not formed on the inclined surface of the groove,
and a step of filling the grooves of the opposing intermediate base materials with a 2 nd transparent resin having a melting point lower than that of the 1 st transparent resin by heating and pressing the intermediate base materials in a vacuum state in a state where the ridges of the pair of intermediate base materials are opposed to each other, wherein the intermediate base materials in the pair are each composed of the molding base materials in which the mirror surfaces are formed, and a refractive index η 2 of the 2 nd transparent resin is in a range of 0.96 to 1.04 times a refractive index η 1 of the 1 st transparent resin.
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| JP2017081317A JP6203978B1 (en) | 2017-04-17 | 2017-04-17 | Method for manufacturing stereoscopic image forming apparatus |
| JP2017-081317 | 2017-04-17 | ||
| PCT/JP2018/014431 WO2018193846A1 (en) | 2017-04-17 | 2018-04-04 | Method for manufacturing stereoscopic image forming device |
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| CN110476106A CN110476106A (en) | 2019-11-19 |
| CN110476106B true CN110476106B (en) | 2021-09-10 |
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| WO2018220876A1 (en) * | 2017-06-01 | 2018-12-06 | 株式会社アスカネット | Method for manufacturing stereoscopic image forming device, and stereoscopic image forming device |
| EP3825740A4 (en) * | 2018-07-18 | 2022-04-13 | Asukanet Company, Ltd. | Method for manufacturing stereoscopic image formation device and stereoscopic image formation device |
| US20210255477A1 (en) * | 2018-07-18 | 2021-08-19 | Asukanet Company, Ltd. | Method for manufacturing stereoscopic image formation device and stereoscopic image formation device |
| JP2020101614A (en) * | 2018-12-20 | 2020-07-02 | 株式会社アスカネット | Stereoscopic image forming device |
| JP7305952B2 (en) | 2018-12-20 | 2023-07-11 | 日本ゼオン株式会社 | Resin filling method |
| CN112462457B (en) * | 2020-12-17 | 2023-07-25 | 无锡太空力量科技有限公司 | Microlens set capable of realizing light field replication transformation operation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648717A (en) * | 2004-01-29 | 2005-08-03 | 株式会社有泽制作所 | Stereoscopic image displaying apparatus |
| CN204515178U (en) * | 2015-02-11 | 2015-07-29 | 华南理工大学 | A kind of inside surface has the reflecting element of micro-convex structure array |
| WO2016132984A1 (en) * | 2015-02-18 | 2016-08-25 | コニカミノルタ株式会社 | Optical element, reflective aerial image forming element using same, and manufacturing methods therefor |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002221611A (en) * | 2001-01-26 | 2002-08-09 | Nippon Tokushu Kogaku Jushi Kk | Prism sheet for projection image display device, sheet type optical element, method for manufacturing sheet type optical element and projection image display device |
| US6760514B2 (en) * | 2002-02-27 | 2004-07-06 | Agilent Technologies, Inc. | Continuously tunable photonic crystal drop filter |
| ITMO20020205A1 (en) * | 2002-07-17 | 2004-01-19 | Giorgio Corradi | MULTI-LAYER REAR-REFLECTIVE FILM, IN PARTICULAR OF THE MICROPRISM TYPE |
| JP4277721B2 (en) * | 2003-05-02 | 2009-06-10 | セイコーエプソン株式会社 | Manufacturing method of optical low-pass filter |
| JP4475501B2 (en) * | 2003-10-09 | 2010-06-09 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Spectroscopic element, diffraction grating, composite diffraction grating, color display device, and duplexer |
| CN1544961A (en) * | 2003-11-24 | 2004-11-10 | 中国人民解放军国防科学技术大学 | Photon crystal omnibearing full inverse film |
| JP4528333B2 (en) * | 2008-01-25 | 2010-08-18 | 株式会社有沢製作所 | Stereoscopic image display device and manufacturing method thereof |
| JP4865088B2 (en) * | 2008-04-22 | 2012-02-01 | 株式会社アスカネット | Optical imaging method |
| JP2009271263A (en) * | 2008-05-02 | 2009-11-19 | Tohoku Univ | Screen for front projection using one side specular serration reflecting plate, and front projection type display and information processing apparatus using the same |
| JP5085631B2 (en) * | 2009-10-21 | 2012-11-28 | 株式会社アスカネット | Optical imaging apparatus and optical imaging method using the same |
| JP4973794B1 (en) * | 2011-04-06 | 2012-07-11 | ソニー株式会社 | Display device |
| JP5728748B2 (en) * | 2011-05-25 | 2015-06-03 | 国立研究開発法人情報通信研究機構 | Reflector array optical device and display device using the same |
| CN103293577B (en) * | 2013-06-21 | 2015-03-25 | 中国科学院上海技术物理研究所 | 4-14.5-micrometer infrared wide-spectrum beam splitting film with ZnSe substrate |
| JP2016069667A (en) * | 2014-09-29 | 2016-05-09 | 大日本印刷株式会社 | Regulation member for deposition, and deposition apparatus |
| JP2017072681A (en) * | 2015-10-06 | 2017-04-13 | Jsr株式会社 | Resin composition for forming light-controlling member |
-
2017
- 2017-04-17 JP JP2017081317A patent/JP6203978B1/en active Active
-
2018
- 2018-04-04 WO PCT/JP2018/014431 patent/WO2018193846A1/en active Application Filing
- 2018-04-04 CN CN201880022047.4A patent/CN110476106B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648717A (en) * | 2004-01-29 | 2005-08-03 | 株式会社有泽制作所 | Stereoscopic image displaying apparatus |
| CN204515178U (en) * | 2015-02-11 | 2015-07-29 | 华南理工大学 | A kind of inside surface has the reflecting element of micro-convex structure array |
| WO2016132984A1 (en) * | 2015-02-18 | 2016-08-25 | コニカミノルタ株式会社 | Optical element, reflective aerial image forming element using same, and manufacturing methods therefor |
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| WO2018193846A1 (en) | 2018-10-25 |
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| JP6203978B1 (en) | 2017-09-27 |
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